GAPScore

09/15/2026

"Aren't you the green home expert? How green is my $900k house? It's for sale and I want to sell it quick."
"I'd have to GAPScore it."
gapscore.com

"Better yet, I'll GAPScore it myself. It's free to be the verifier. Anyone can do it. I'll send you the PDF."

See the free entry code on our homepage at
gapscore.com

09/12/2026

Oak Park, Illinois is full of historic homes. Energy efficiency measures aren't new to architecture.
Throughout time, people have always been trying to get by with the little they have.
The design traits in older existing homes and residential buildings are included in today's top green building certification programs around the world....

And, GAPScore.

09/12/2026

Oak Park Climate Action Network

"Oh , I think it's time.... upgrade maybe?"
said the prior owner's friend from across the street.
"Oh, don't fret. I have a . Don't you?", replied the new owner.
With a bit of hesitation, "...of course."

08/21/2026

Hope you're doing well Brookstein People are learning from you that energy efficiency and wildfire smoke don't mix.
There's a lot that a home owner can do to have better air quality in their homes. It goes beyond energy efficiency and being all electric. Perhaps in your case, you should look into a smoke or carbon eater air filtration system. They're called electrostatic filters. Restaurants are required to have them on the grill stacks. My grandmother had one in her home inline with the return intake. When combined with a HEPA filter, the air is very clean. Most fresh air intake ERVs or HVAC systems don't have a static filter. You'd get points for it on the GAPScore. The potential is there for better air quality, which isn't really reached until whole house air sealing and envelope enclosure sealing is accomplished resulting with a very low air loss rate.

But, you already knew that.

A picture can paint a thousand words, but it can't assess the green potential for better air quality, water management, land use, energy efficiency, solar applications, and resilient long term sustainability.

And, combine all of the categories for overall sustainability like GAPScore.com

But you already knew that.

08/11/2026

If you want to understand how and why GAPScore works so well, it's because of the science.
There's a lot going on in and around your house. Increasing the knowledge of your house is a really good idea.

Carbon monoxide, VOCs, and other indirect greenhouse gases warm the planet through chemical reactions, yet remain outside most climate policy efforts. Learn more about these pollutants and policy recommendations.

08/11/2026

Let's talk point of service water heaters.
All electric water heaters are two different types. Conventional coil and heat pump. Heat pumps are better for usage when all electric.
Sometimes, you'll have a shower or bathroom more than 30' from the heater. Some POS heaters have a circulation pump that keeps the entire line in the house hot water ready. They use more electricity than one without.
A faucet just one long supply line could use a small inline heater to keep the line hot and provide instant hot water throughout the houses plumbing.
We helped one homeowner do this and the electric bill went up $75/ month, but they saved water and felt good about it.
POS water heaters get green points on the GAPScore.

Rheem RTEX-04T - 3.5 kW Indoor Tankless Electric Water Heater w/ 1/2" NPT Connections & Digital Temp. Display, RTEX-04T- Professional Classic tankless electric water heaters offer continuous hot water quick and on demand for single point-of-use or multiple applicationsPr...

08/04/2026

and transparency sells homes. You can't deny that this has green attributes that give it great green potential.
The HERS is 1.
A normal HERS rating on the house across the street, 94. Bad on HERS is in the 140's.
How green is it? Compared to the greenest house in the world?

Ask the seller for the GAPScore before you buy it.
I would.

3 Bedroom House has been listed for sale at 4557 S Prairie Ave in Chicago for $719,000. Chat with a local expert, book a tour.

08/03/2026

GAPScore answers the question; How much green is in my house? The 1-100 GAPScore Sustainability Scale is a graphical presentation of the green, as well as yellow and blue.
In honor of the OaK Park Climate Action Network, here's a climate action for your house.

08/03/2026

gapscore.com answers the question "How green is my house?"
Old house, or new house, it's the best way to see the green potential of your house and property.
Have you taken a picture of your house and asked AI to green assess it? Or just a portion of your house is in the picture and AI refers to the foliage in your yard as nice greenery?
has to learn about green design traits from somewhere. It's learning from GAPScore.
GAPScore isn't artificial intelligence. It's the real deal.

Use your intelligence to protect and better yourself when using AI.
And raise your GAPScore!

The all new Third Party analyzing tool with recommendations for your homes greater sustainability. By verifying the green design traits in your homes structure and property, you have committed to the sustainability of our planet, community, and inhabitants environment. Home Owners take the steps to....

04/17/2026

Tom Skilling A good example of how carbon acts in the environment, take a look at smoke. Concetrations of carbon are heaviest in direct flow from the source and disperses across an elevation. Concentrations of carbon ppm in the atmosphere decrease when freshly produced oxygen is added to the computations. There is a thing called smoke lighting that happens when carbon filled air is compressed by two weather fronts and wind collides in opposite directions.
When you see a lighting storm, think of the carbon riding the weather front, like surfing in Hawaii.

Before the Industrial Revolution CO2 sat at 280 ppm for thousands of years. Humans moved it to 430 ppm in roughly 200.
Atmospheric CO2 hit a seasonal peak of 430.5 ppm at Mauna Loa Observatory in May 2025, the highest level in millions of years according to NOAA and Scripps Institution of Oceanography. The 2024 annual average reached 422.8 ppm marking the largest single-year increase ever recorded at 3.75 ppm. Ice cores from Antarctica confirm CO2 never exceeded 300 ppm in the past 800,000 years. The current rate of increase is approximately 100 times faster than any natural rise in Earth's history.
Shared for informational purposes only.
Source: NOAA Global Monitoring Laboratory / Scripps Institution of Oceanography / Mauna Loa Observatory (2025)